1. Digital audio means DRM audio
iTunes and later the Amazon MP3 store made DRM free audio a standard for audio you buy. This cat isn't going back in the bag. If you are whining that it's gettting harder to rip DRM from Spotify, etc. (music that you rent) then screw off, you're stealing and it's nobody's problem but your own.
2. Wireless headphones and speakers are fine, not great.
Wires are fine, not great. Shitty amps in phones are fine, not great. Bluetooth is great, your shitty $12 rig notwithstanding.
3. Dongles are stupid, especially when they require other dongles.
See 3, and use bluetooth.
4. Ditching a deeply established standard will disproportionately impact accessibility.
So will ditching DB-9 and floppy disks. Boo-hoo.
5. Making Android and iPhone headphones incompatible is incredibly arrogant and stupid.
You actually have a point here. MicroUSB and Lightning should be ditched in favor of USB-C. Yesterday.
6. No one is asking for this.
Remove a useless port for water and dust to get into? Sign me up!
You're taking up 63 megabyes per book?
Yep. These are scans. Born digital content and manually proof read stuff like Project Gutenberg is of course much smaller, but for images of each page for 100 to 1000 pages 63 MB is about average.
it is like an article featuring a new sports car that does not mention its horsepower.
To put in a way that slashdotters may understand, it is like an article featuring a new processor that does not mention it's clock speed.
As in certain cults it is possible to kill a process if you know its true name. -- Ken Thompson and Dennis M. Ritchie